Apple pay does not work after case replacement

Hi guys,

I have recently replaced the rear housing on my iPhone 8. Basically took out all parts from the old one and put it into the new one. When I put it all together, the wireless charging did not work (did not check Apple Pay at that time). I thought I might’ve damaged the sticker antenna, so bought a new one and installed it. Now the charging works, but Apple pay does not.

Does Apple pay & Wireless charging use the same antenna?

Any ides of what I should be looking at to fix this ?

Thanks!